您的位置：首页 > Web前端 > CSS

定义silverlight报表样式-Styling a Silverlight Chart

2010-07-26 18:21 281 查看

A article on how to style a standard Silverlight chart to look like the Google Analytics chart.Download source code - 11.1 KB

Introduction

I love Google Analytics! I use it to monitor every site I own… Google’s chart looks very slick! Here is a walkthrough on how to style your Silverlight chart to look like the Google Analytics chart!

Before we start

We need some data. I created very basic

TrafficInfo

and

TrafficInfoCollection

objects with some dummy data that I can bind to.

public class TrafficInfo
{
public DateTime Date { get; set; }
public int Visits { get; set; }
}

We also need the Silverlight Toolkit (I used the port to WPF created by Jaime Rodriquez).

Let's start with the basics

Add the following two namespaces:

xmlns:charting="clr-namespace:Microsoft.Windows.Controls.DataVisualization.
Charting;assembly=Microsoft.Windows.Controls.DataVisualization"
xmlns:datavis="clr-namespace:Microsoft.Windows.Controls.DataVisualization;
assembly=Microsoft.Windows.Controls.DataVisualization"

Now, let's create a simple line chart:

<charting:Chart Width="800" Height="175">
<charting:Chart.Series>
<charting:LineSeries IsSelectionEnabled="True"
Title="Visits"
ItemsSource="{StaticResource TrafficInfo}"
IndependentValueBinding="{Binding Date}"
DependentValueBinding="{Binding Visits}" />
</charting:Chart.Series>
</charting:Chart>

And here is our master piece:

Not bad, but…

Style, style, style

Let's start styling our chart… I will split the styling into two parts; the first part will be specific to line charts, and the second part might be relevant to other types of charts too…

Styling the LineSeries

Each

LineSeries

has a

PolylineStyle

property. The

PolylineStyle

controls how the line looks. Here is our

GooglePolylineStyle

<Style x:Key="GooglePolylineStyle" TargetType="Polyline">
<Setter Property="StrokeThickness" Value="5"/>
</Style>

And, here is the style for the

LineDataPoint

<Style x:Key="GoogleLineDataPointStyle" TargetType="charting:LineDataPoint">
<Setter Property="Background" Value="#0077CC" />
<Setter Property="BorderBrush" Value="White"/>
<Setter Property="BorderThickness" Value="2"/>
<Setter Property="IsTabStop" Value="False"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="charting:LineDataPoint">
<Grid x:Name="Root" Opacity="1">
<ToolTipService.ToolTip>
<StackPanel Margin="2,2,2,2">
<ContentControl Content="{TemplateBinding IndependentValue}"
ContentStringFormat="{}{0:MMMM d, yyyy}"/>
<ContentControl Content="{TemplateBinding DependentValue}"
ContentStringFormat="Visits {0:###,###,###}"/>
</StackPanel>
</ToolTipService.ToolTip>
<Ellipse StrokeThickness="{TemplateBinding BorderThickness}"
Stroke="{TemplateBinding BorderBrush}"
Fill="{TemplateBinding Background}"/>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>

Also update the chart’s

LineSeries

to use our newly created styles:

<charting:LineSeries IsSelectionEnabled="True"
PolylineStyle="{StaticResource GooglePolylineStyle}"
DataPointStyle="{StaticResource GoogleLineDataPointStyle}"
MarkerHeight="10" MarkerWidth="10"
Title="Visits"
ItemsSource="{StaticResource TrafficInfo}"
IndependentValueBinding="{Binding Date}"
DependentValueBinding="{Binding Visits}" />

And, here is the result:

There are a few things to notice here. Each

DataPoint

has the following properties you can use and display in your tooltip:

DependentValue

FormattedDependentValue

IndependentValue

FormattedIndependentValue

Each

LineSeries

can specify the

DataPoint

marker size using

MarkerWidth

and

MarkerHeight

Styling the chart

I want to remove the title and the ledger of the chart. There are two options to removing these items! You can create new styles for the title and the ledger that sets its visibility to

Collapsed

. (This trick also works if you don’t want

DataPoint

markers.)

<Style x:Key="GoogleNoTitle" TargetType="datavis:Title">
<Setter Property="Visibility" Value="Collapsed"/>
</Style>

Then, just set the

TitleStyle

and

LedgerStyle

properties on the chart:

TitleStyle="{StaticResource GoogleNoTitle}"

The seconds method of removing these is to rather create a new

ControlTemplate

for the chart and remove them permanently!

<Style x:Key="GoogleChart" TargetType="charting:Chart">
<Setter Property="PlotAreaStyle">
<Setter.Value>
<Style TargetType="Grid">
<Setter Property="Background" Value="White" />
</Style>
</Setter.Value>
</Setter>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="charting:Chart">
<Border
Background="{TemplateBinding Background}"
BorderBrush="{TemplateBinding BorderBrush}"
BorderThickness="{TemplateBinding BorderThickness}"
Padding="10">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<Grid Grid.Row="1" Margin="0,15,0,15">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
<Grid x:Name="ChartArea"
Style="{TemplateBinding ChartAreaStyle}">
<Grid x:Name="PlotArea"
Style="{TemplateBinding PlotAreaStyle}"
Margin="0,0,0,0" >
<Grid x:Name="GridLinesContainer" />
<Grid x:Name="SeriesContainer" />
<Border Margin="0,0,0,0"
BorderBrush="#FF919191"
BorderThickness="0,1,0,1"/>
</Grid>
</Grid>
</Grid>
</Grid>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>

The new

ControlTemplate

merely removes the title and ledger! The last part of the chart we need to style are the axes. If you look at the Google chart, you will notice that the vertical grid lines indicate where a week starts; how difficult would this be?

Each chart has an

Axes

property, which can contain multiple axis! Here are some of the axis properties I used:

LabelStringFormat	MMMM d, yyyy	Changes the format of the labels
ShowGridLines	True	Shows the grid lines
ShowTickMarks	True	Shows the grid line markers
ShouldIncludeZero	True	Scales from 0
IntervalType	Days	Indicates what each unit on the axis is
Interval	7	Interval between points on the axis
IntervalOffset	1	Offset used in creating the axis
IntervalOffsetType	Days	Offset type

Here is the markup:

<charting:Chart.Axes>
<charting:Axis Orientation="Horizontal"
AxisType="DateTime" ShowGridLines="True"
ShowTickMarks="True" LabelStringFormat="MMMM d, yyyy"
IntervalType="Days" Interval="7"
IntervalOffset="1" IntervalOffsetType="Days"
Style="{StaticResource GoogleAxisStyle}" />
<charting:Axis Orientation="Vertical" AxisType="Linear" ShowTickMarks="False"
Interval="4000" IntervalType="Number"
ShowGridLines="True" ShouldIncludeZero="True"
Style="{StaticResource GoogleAxisStyle}"/>
</charting:Chart.Axes>

And that is it.

The Silverlight Toolkit Chart control is very flexible and powerful! Try it out, and you will be surprised at the endless ways you can style it!

If you found this article useful or interesting, please vote for it!

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

http://www.codeproject.com/KB/WPF/WPFSLChart.aspx?display=Print

内容来自用户分享和网络整理，不保证内容的准确性，如有侵权内容，可联系管理员处理

标签：

相关文章推荐

新的分享

章节导航